37
Chapter 3 Motherboard Connections
3.5 LED Indicators
LAN LEDs
Eight RJ45 LAN ports and two SFP LAN ports are located on the I/O back panel. Each
Ethernet LAN port has two LEDs. One LED indicates activity, while the other Link LED may
be green, amber, or off to indicate the speed of the connection. Refer to the tables below for
more information. When the system is in the S1/S3/S4/S5 state, the LAN Link LED will be
in the solid on state.
1GbE RJ45 LAN Link
LED Color
Definition
Off
No Connection or 10 Mb/s
Green
100 Mb/s
Amber
1 Gb/s
Activity Indicator
Color
Status
Definition
Off
No Connection
Yellow
Flashing
Active
Activity LED
Link LED
1G SFP LAN Link LED
(LAN9 - LAN10)
LED Color
Definition
Off
No Connection
Amber
1G
Activity Indicator
Color
Status
Definition
Off
No Connection
Yellow
Flashing
Active
Activity LED
Link LED
Power LED
LED1 is an onboard power LED. When this LED is lit, it means power is present on the
motherboard. In suspend mode, this LED will blink on and off. Be sure to turn off the system
and unplug the power cord(s) before removing or installing components.
Onboard Power LED Indicator
LED Color
Definition
Off
System Off (power cable not connected)
Green
System On
BMC Heartbeat LED
LEDM1 is the BMC heartbeat LED. When the LED is blinking green, BMC is working. Refer
to the table below for the LED status.
BMC Heartbeat LED Indicator
LED Color
Definition
Blinking Green
BMC Normal
